404 error on anchor tag

[eluser]Unknown[/eluser]
PHP Version: 5.4

Server: Win 2008 R2 & IIS 7

$config['base_url'] = 'http://myci:8080/onlinelib/';

$route['default_controller'] = "welcome";
$route['404_override'] = 'errors/page_missing';

anchor("page1","Login Here") on welcome page

It gives error 404 on "page1" but when I am updating to $route['default_controller'] = "page1" then it is working fine but gives same error for welcome page

Please help.....

[eluser]InsiteFX[/eluser]
Add a Route for it.

Code:

$route['page1'] = 'page1';

And see if it works.